From cd4549aff7f0218ab6279cb3aa8a226cfb8b21bc Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Tue, 21 Jun 2022 17:31:50 -0600
Subject: [PATCH] fix signed/unsigned warning

---
 libs/pbd/pbd/stacktrace.h | 3 ++-
 libs/pbd/stacktrace.cc    | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/libs/pbd/pbd/stacktrace.h b/libs/pbd/pbd/stacktrace.h
index cd8ce14605..daf61e88c1 100644
--- a/libs/pbd/pbd/stacktrace.h
+++ b/libs/pbd/pbd/stacktrace.h
@@ -24,6 +24,7 @@
 #ifdef HAVE_WAFBUILD
 #include "libpbd-config.h"
 #endif
+#include <cstddef>
 
 #include <iostream>
 #include <ostream>
@@ -40,7 +41,7 @@
 
 namespace PBD {
 
-	LIBPBD_API void stacktrace (std::ostream& out, int levels = 0, int start_level = 0);
+	LIBPBD_API void stacktrace (std::ostream& out, int levels = 0, size_t start_level = 0);
 	LIBPBD_API void trace_twb();
 
 template<typename T>
diff --git a/libs/pbd/stacktrace.cc b/libs/pbd/stacktrace.cc
index adab339db5..f8ba7e08b3 100644
--- a/libs/pbd/stacktrace.cc
+++ b/libs/pbd/stacktrace.cc
@@ -49,7 +49,7 @@ PBD::trace_twb ()
 #include <execinfo.h>
 
 void
-PBD::stacktrace (std::ostream& out, int levels, int start)
+PBD::stacktrace (std::ostream& out, int levels, size_t start)
 {
 	void *array[200];
 	size_t size;